Patents by Inventor Gerald Sigler

Gerald Sigler has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7642059
    Abstract: A highly specific homogeneous assay method for an immunosuppressive drug using an immunophilin in a single receptor format is provided. In the simplest format, a single receptor is utilized analogous to a competitive immunoassay whereby an immunophilin is substituted for an antibody, and a competition results between a drug conjugate and the drug analyte for a limited number of immunophilin binding sites. In a microparticle agglutination assay format, an immunophilin is either bound to a particle or in solution. In the case where an immunophilin is bound to a particle, a polyvalent conjugate of the drug analyte is present in solution.
    Type: Grant
    Filed: August 31, 2006
    Date of Patent: January 5, 2010
    Assignee: Roche Diagnostics Operations, Inc.
    Inventors: Gerald Sigler, Mitali Ghoshal, Allan Dorn, Shaker Rashid
  • Patent number: 7476727
    Abstract: The present invention provides a method for the measurement of an analyte in biological samples whereby an uncompetitive inhibitor is coupled to a ligand and utilized in a homogeneous assay. The analyte can be a drug or drug derivative, hormone, polypeptide, or oligonucleotide. The present invention also provides novel compounds, assay reagents and packaged kits useful for performing such measurements.
    Type: Grant
    Filed: February 9, 2007
    Date of Patent: January 13, 2009
    Assignee: Roche Diagnostics Operations, Inc.
    Inventors: Mitali Ghoshal, Gerald Sigler, Raymond A. Hui, Ronald Hawley, Eva Hoess, Erasmus J. Huber, John W. Patterson, Salvatore J. Salamone, Allan Dorn
  • Publication number: 20080227959
    Abstract: The invention provides derivatives of efavirenz and methods of making derivatives of efavirenz. The derivatives include immunogenic compounds for producing antibodies to efavirenz and labeled efavirenz tracers. These compounds are useful in immunoassay methods for determining efavirenz.
    Type: Application
    Filed: May 16, 2008
    Publication date: September 18, 2008
    Inventors: Mitali Ghoshal, Gerald Sigler, Anlong Ouyang, Richard Root
  • Patent number: 7420043
    Abstract: The invention provides derivatives of efavirenz and methods of making derivatives of efavirenz. The derivatives include immunogenic compounds for producing antibodies to efavirenz and labeled efavirenz tracers. These compounds are useful in immunoassay methods for determining efavirenz.
    Type: Grant
    Filed: December 10, 2003
    Date of Patent: September 2, 2008
    Assignee: Roche Diagnostics Operations, Inc.
    Inventors: Mitali Ghoshal, Gerald Sigler, Anlong Ouyang
  • Publication number: 20080021201
    Abstract: Activated haptens useful for generating immunogen to HIV protease inhibitors, immunogens useful for producing antibodies to HIV protease inhibitors, and antibodies and labeled conjugates useful in immunoassays for the HIV protease inhibitor saquinavir. The novel haptens feature an activated functionality at the central, non-terminal hydroxyl group. Also described are monoclonal antibodies specific for saquinavir having less than 10% cross-reactivity with lopinavir, nelfinavir, amprenavir, ritonavir, and indinavir, and a murine hybridoma producing said antibodies.
    Type: Application
    Filed: February 1, 2007
    Publication date: January 24, 2008
    Inventors: Gerald Sigler, Raymond Hui, Ina Deras, Erasmus Huber, Herbert Von Der Eltz, Sigrun Metz, Peter Kern
  • Publication number: 20070191595
    Abstract: Analogs of 6-monoacetyl morphine (6-MAM) are described. These include analogs derivatized at either the C-3 position, the C-6 position, or the nor position of the molecule. These analogs allow for elaboration with linkers terminated by a functional group such as an activated ester, the functional groups being useful for attaching the molecule to other entities such as proteins, polysaccharides, and reporter groups.
    Type: Application
    Filed: March 8, 2007
    Publication date: August 16, 2007
    Inventors: Mitali Ghoshal, Gerald Sigler, Richard Root
  • Publication number: 20070155959
    Abstract: Activated haptens useful for generating immunogens to HIV protease inhibitors, immunogens useful for producing antibodies to HIV protease inhibitors, and antibodies and labeled conjugates useful in immunoassays for the HIV protease inhibitor saquinavir. The novel haptens feature an activated functionality at the central, non-terminal hydroxyl group. Also described are monoclonal antibodies specific for saquinavir having less than 10% cross-reactivity with lopinavir, nelfinavir, amprenavir, ritonavir, and indinavir, and a murine hybridoma producing said antibodies.
    Type: Application
    Filed: January 31, 2007
    Publication date: July 5, 2007
    Inventors: Gerald Sigler, Raymond Hui, Ina Deras, Richard Root, Mitali Ghoshal, Erasmus Huber, Herbert Von Der Eltz, Sigrun Metz, Peter Kern
  • Publication number: 20070148708
    Abstract: Activated haptens useful for generating immunogens to HIV protease inhibitors, immunogens useful for producing antibodies to HIV protease inhibitors, and antibodies and labeled conjugates useful in immunoassays for the HIV protease inhibitor saquinavor. The novel haptens feature an activated functionality at the central, non-terminal hydroxyl group. Also described are monoclonal antibodies specific for saquinavir having less than 10% cross-reactivity with lopinavir, nelfinavir, amprenavir, ritonavir, and indinavir, and a murine hybridoma producing said antibodies.
    Type: Application
    Filed: January 31, 2007
    Publication date: June 28, 2007
    Inventors: Gerald Sigler, Raymond Hui, Ina Deras, Richard Root, Mitali Ghoshal, Erasmus Huber, Herbert Von Der Eltz, Sigrun Metz, Peter Kern
  • Publication number: 20070148684
    Abstract: A non-isotopic immunoassay for an HIV protease inhibitor comprising incubating a sample containing the inhibitor with a receptor specific for the inhibitor or for a metabolite of said inhibitor and further with a conjugate comprising an analog of the inhibitor and a non-isotopic signal generating moiety.
    Type: Application
    Filed: February 9, 2007
    Publication date: June 28, 2007
    Inventors: Salvatore Salamone, Gerald Sigler, Lili Arabshahi
  • Publication number: 20070149565
    Abstract: Activated haptens useful for generating immunogens to HIV protease inhibitors, immunogens useful for producing antibodies to HIV protease inhibitors, and antibodies and labeled conjugates useful in immunoassays for the HIV protease inhibitor saquinavir. The novel haptens feature an activated functionality at the central, non-terminal hydroxyl group. Also described are monoclonal antibodies specific for saquinavir having less than 10% cross-reactivity with lopinavir, nelfinavir, amprenavir, ritonavir, and indinavir, and a murine hybridoma producing said antibodies.
    Type: Application
    Filed: January 26, 2007
    Publication date: June 28, 2007
    Inventors: Gerald Sigler, Raymond Hui, Ina Deras, Richard Root, Mitali Ghoshal, Erasmus Huber, Herbert Von Der Eltz, Sigrun Metz, Peter Kern
  • Patent number: 7235675
    Abstract: The present invention provides a method for the measurement of an analyte in biological samples whereby an uncompetitive inhibitor is coupled to a ligand and utilized in a homogeneous assay. The analyte can be a drug or drug derivative, hormone, polypeptide, or oligonucleotide. The present invention also provides novel compounds, assay reagents and packaged kits useful for performing such measurements.
    Type: Grant
    Filed: July 27, 2004
    Date of Patent: June 26, 2007
    Assignee: Roche Diagnostics Operations, Inc.
    Inventors: Mitali Ghoshal, Gerald Sigler, Raymond A. Hui, Ronald Hawley, Eva Hoess, Erasmus J. Huber, John W. Patterson, Salvatore J. Salamone, Allan Dorn
  • Publication number: 20070142628
    Abstract: Analogs of 6-monoacetyl morphine (6-MAM) are described. These include analogs derivatized at either the C-3 position, the C-6 position, or the nor position of the molecule. These analogs allow for elaboration with linkers terminated by a functional group such as an activated ester, the functional groups being useful for attaching the molecule to other entities such as proteins, polysaccharides, and reporter groups.
    Type: Application
    Filed: December 16, 2005
    Publication date: June 21, 2007
    Applicant: Roche Diagnostics Operations, Inc.
    Inventors: Mitali Ghoshal, Gerald Sigler, Richard Root
  • Publication number: 20070142631
    Abstract: The present invention provides a method for the measurement of an analyte in biological samples whereby an uncompetitive inhibitor is coupled to a ligand and utilized in a homogeneous assay. The analyte can be a drug or drug derivative, hormone, polypeptide, or oligonucleotide. The present invention also provides novel compounds, assay reagents and packaged kits useful for performing such measurements.
    Type: Application
    Filed: February 9, 2007
    Publication date: June 21, 2007
    Inventors: Mitali Ghoshal, Gerald Sigler, Raymond Hui, Ronald Hawley, Eva Hoess, Erasmus Huber, John Patterson, Salvatore Salamone, Allan Dorn
  • Publication number: 20070141643
    Abstract: Activated haptens useful for generating immunogens to HIV protease inhibitors, immunogens useful for producing antibodies to HIV protease inhibitors, and antibodies and labeled conjugates useful in immunoassays for the HIV protease inhibitor saquinavir. The novel haptens feature an activated functionality at the central, non-terminal hydroxyl group. Also described are monoclonal antibodies specific for saquinavir having less than 10% cross-reactivity with lopinavir, nelfinavir, amprenavir, ritonavir, and indinavir, and a murine hybridoma producing said antibodies.
    Type: Application
    Filed: February 2, 2007
    Publication date: June 21, 2007
    Inventors: Gerald Sigler, Raymond Hui, Ina Deras, Richard Root, Mitali Ghoshal, Erasmus Huber, Herbert Von Der Eltz, Sigrun Metz, Peter Kern
  • Publication number: 20070122859
    Abstract: The present invention provides hapten derivatives useful for the preparation of antigens, antibodies and reagents for use in immunoassays for the detection of LSD and 2-oxo-3-hydroxy LSD. In the present invention, the 2-oxy LSD nucleus is derivatized out of the indole nitrogen to form an aminoalkyl derivative. The resulting haptens can then be further modified at this functionalized position for linking to appropriate immunogenic or labeling groups to provide reagents for immunoassays having substantially equal specificity for both LSD and 2-oxo-3-hydroxy-LSD.
    Type: Application
    Filed: December 14, 2006
    Publication date: May 31, 2007
    Inventors: Mitali Ghoshal, Stephen Vitone, Gerald Sigler, Alan McNally
  • Patent number: 7202092
    Abstract: Derivatives and conjugates of indinavir for generation of antibodies and labeled conjugates for use for detection of indinavir in biological samples. The derivatives are synthesized out of the indane ring hydroxyl group or the pyridine ring nitrogen of indinavir. Also disclosed is synthesis of a major metabolite of indinavir (M6) in a single step from indinavir using palladium catalyst and hydrogen gas. Indinavir M6 has been extended to synthesize various analogs of indinavir with suitable functional groups. These derivatives are useful in the development of indinavir immunogens, antibodies, and labeled conjugates in the development of indinavir immunoassays.
    Type: Grant
    Filed: November 12, 2004
    Date of Patent: April 10, 2007
    Assignee: Roche Diagnostics Operations, Inc.
    Inventors: Mitali Ghoshal, Gerald Sigler, Aniruddha P. Patwardhan
  • Publication number: 20070054338
    Abstract: A highly specific homogeneous assay method for an immunosuppressive drug using an immunophilin in a single receptor format is provided. In the simplest format, a single receptor is utilized analogous to a competitive immunoassay whereby an immunophilin is substituted for an antibody, and a competition results between a drug conjugate and the drug analyte for a limited number of immunophilin binding sites. In a microparticle agglutination assay format, an immunophilin is either bound to a particle or in solution. In the case where an immunophilin is bound to a particle, a polyvalent conjugate of the drug analyte is present in solution.
    Type: Application
    Filed: August 31, 2006
    Publication date: March 8, 2007
    Inventors: Gerald Sigler, Mitali Ghoshal, Allan Dorn, Shaker Rashid
  • Publication number: 20060264618
    Abstract: Monoclonal antibodies specific for lopinavir having less than 10% cross-reactivity with saquinavir, nelfinavir, amprenavir, ritonavir, and indinavir, and a murine hybridoma producing said antibodies are described.
    Type: Application
    Filed: May 26, 2006
    Publication date: November 23, 2006
    Inventors: Ina Deras, Gerald Sigler, Raymond Hui, Richard Root, Mitali Ghoshal, Erasmus Huber, Herbert Von Der Eltz, Sigrun Metz, Peter Kern
  • Publication number: 20060211107
    Abstract: Activated haptens useful for generating immunogens to HIV protease inhibitors, immunogens useful for producing antibodies to HIV protease inhibitors, and antibodies and labeled conjugates useful in immunoassays for the HIV protease inhibitor saquinavir. The novel haptens feature an activated functionality at the central, non-terminal hydroxyl group. Also described are monoclonal antibodies specific for saquinavir having less than 10% cross-reactivity with lopinavir, nelfinavir, amprenavir, ritonavir, and indinavir, and a murine hybridoma producing said antibodies.
    Type: Application
    Filed: May 26, 2006
    Publication date: September 21, 2006
    Inventors: Gerald Sigler, Raymond Hui, Ina Deras, Richard Root, Erasmus Huber, Herbert Von Der Eltz
  • Publication number: 20060127938
    Abstract: A non-isotopic immunoassay for an HIV protease inhibitor comprising incubating a sample containing the inhibitor with a receptor specific for the inhibitor or for a metabolite of said inhibitor and further with a conjugate comprising an analog of the inhibitor and a non-isotopic signal generating moiety. Signal generated as a result of binding of the inhibitor by the receptor is measured and correlated with the presence or amount of protease inhibitor in the original sample.
    Type: Application
    Filed: January 26, 2006
    Publication date: June 15, 2006
    Inventors: Salvatore Salamone, Gerald Sigler, Lili Arabshahi